Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8ee0ab311d5111a…

MALICIOUS

PDF

36.9 KB Created: 2021-05-20 20:49:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a4458f1644d8bdcd9cd8d478d619cada SHA-1: 20567690157689ebe415c23ec3e9444b522e495e SHA-256: e8ee0ab311d5111ac848d77b33d95675c1248cf1aef7f6f4c0764d0e35987ab6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/how-to-get-minecoins-in-minecraft-for-free-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000375d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x375D 25332 bytes
SHA-256: 455339a5d1dd74db351c48d1cafce547db4ee9a1a29ce5453d282f26f694c6dd
font_01_sfnt_off00007042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7042 17872 bytes
SHA-256: d23bbe04ef3196a5fa54f397c57d78b821aa47262b4b410e5e0dbd5db48197bd

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